Answer:
B) A body at rest will stay at rest
Explanation:
A body in motion will stay in motion unless acted on by another force.
Answer:
213.5 kJ
Explanation:
Mechanical energy= kinetic energy + potential energy= KE+PE= where m is the mass of rock climber, v is the velocity, g is acceleration due to gravity and h is the height.
By substitution where 68 Kg is m, 320 m is h, 1.5 m/s is v and 9.81 is g then
Mechanical energy=
True, physical excercise helps
If I can't open the lid of a jelly jar, I'd keep trying and if I can't open the lid of a jelly jar after the MANY tries I took, I'd ask for help.